Oh new one! This might be really easy since you are reading it instead of hearing it.So you are picking up random people around the country in your bus. The bus picks up two people in your hometown. The bus goes to one city and picks up four people. The bus goes to another city and picks up five people. The bus goes to another city and pick up seven people. Three people from the first city the bus came to and needed to be picked up so the picked them up after picking up four more people. The bus picks up six more people until it reached the destination. What is the color of the bus driver's hair?

New riddle (should be easy if you understand time paradoxes): Bill and Bob are arguing about who lost the keys then one says we should use a time machine and stop us from losing the keys. They go back in time and see that Bob lost the keys. They tell Bob that he can not lose the keys and then return home. What is wrong with this conclusion?